2172006042 has 16 divisors (see below), whose sum is σ = 4461418272. Its totient is φ = 704434320.

The previous prime is 2172006019. The next prime is 2172006043. The reversal of 2172006042 is 2406002712.

It is a super-2 number, since 2×2172006042² = 9435220492969011528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2172006043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4891684 + ... + 4892127.

It is an arithmetic number, because the mean of its divisors is an integer number (278838642).

Almost surely, 2^2172006042 is an apocalyptic number.

2172006042 is an abundant number, since it is smaller than the sum of its proper divisors (2289412230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2172006042 is a wasteful number, since it uses less digits than its factorization.

2172006042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9783853.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 2172006042 is about 46604.7856126385. The cubic root of 2172006042 is about 1295.0514118218.

Adding to 2172006042 its reverse (2406002712), we get a palindrome (4578008754).

The spelling of 2172006042 in words is "two billion, one hundred seventy-two million, six thousand, forty-two".